Mortise-lock.



A TTOHNE YS w, W wp. M au m m f1 w/TNESSES LOUIS S. S. GEORGE, OFKAMLOOPS, BRITISH COLUMBIA, CANADA.

MORTISE-LOCK.

Specification of Letters Patent.

Patented Jan. '7, 1908.

Application filed .Tune 29. 1907. Serial No. 381.451.

To all whom t may concern: y

Be it known that I, Louis S. S. GEORGE, a subject of the King of GreatBritain, and a resident of Kamloops, in the Province of British Columbiaand Dominion of Canada, have invented a new and useful Improvement inMortise-Locks, of which the following is a full, clear, and exactdescription.

The purpose of the invention is to provide a mortise-lock in which theworking parts are few, simple and compact, and wherein a latch and abolt operate independently of each other, the latch being operated by aknob and pindle and the bolt by means of a suitable Another purpose ofthe invention is to provide a cylindrical tapering casing so that theonly cutting tool required for the insertion of the lock is a propersized auger or other bit, and so that by :reason of the tapering form ofthe casing it is easily inserted in or withdrawn from the openingprepared lfor it, the taper of the casing also serving to counteract anysmall error in the alinement of said opening.

The invention consists in the novel construction and combination of theseveral parts as will be hereinafter fully set forth and pointed out inthe claims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar' characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a longitudinal section through the lock and a sectionthrough that portion of a door in which the lock is fitted, the latchbeing in its outer, and the bolt in its inner position; Fig. 2 is a viewsimilar to Fig. 1, the bolt and latch, however, being both shown intheir outer position g and Fig. 3 is a transverse section takenpractically on the line 3 3 of Fig. 2.

A represents that portion of a door in which the lock casing A isintroduced. The lock casing A is circular in cross section and iseXteriorly tapering so that it may readily enter the opening preparedfor it, and will likewise remedy slight defects in the false alinementof said opening. A face plate 1() is provided for the casing A and thisface plate 10 has usually a slip connection with the outer end of thecasing A, as is illustrated, but it may be otherwise connected to saidcasing, and the face plate is also provided with an opening 11 therein,of such dimen* sions that both the latch B and the bolt C of the lockmay pass outward through said opening and inward to a position withinthe casing. The shoe 12 of the latch B extends rearwardly within thecasing for a predetermined distance and has engagement with the upperwall of the said casing, and at the inner end of the said shoe 12 of thelatch a block extension 13 is formed, having a segmental recess 14produced in itsinner or front face, and at the outer or rear face ofthesaid block extension 13 a stud or projection 15 is provided, surroundedby the contracted end of preferably a coil spring 16,whieh spring hasbearing against the end wall of the said casing A', as is shown both inFigs. 1 and 2, and when the latch B is drawn inward the spring 1G isplaced under tension and when the said latch is relieved from pressureby its operating factor, the spring 16 instantly acts to carry the headof the latch B out to locking position with a suitable keeper or inposition to engage with such keeper.

A bore 17 is made transversely in the door and at right angles to thecasing A', the said bore being opposite the recess 14 in the blockextension 13 of the latch when the latch is in its outer position. Faceplates 1S are made to surround the bore 17 at its ends, the said platesbeing suitably attached to the outer face of the door, as is shown inFig. 3, and spindle sleeves 19 are passed through the end portions ofthe bore 17 into the easing A through openings 20 in the sides of saidcasing, and the outer faces of the casing where the openings 2O aremade, are 'flattened in order to receive the inner flat faces ofsegmental flanges 21 formed at the ends of the said spindle sleeves, theconveXed surfaces of which flanges form eontinuations of the convexedsurfaces of the said easing A where said openings 20 are produced. rlhespindle sleeves 19 meet at the transverse center of the casing and passthrough the recess 14 in the block extension 13 of the latch shoe B, asis illustrated in Figs. 1 and 2. A segmental cam 2 is formed centrallyupon the inner or forward faces of the spindle sleeves 19, a portion ofthe said cam being formed on each spindle sleeve, and the two sectionsare brought together when the spindles are in their normal position,shown in Fig. 3. 'lhe interior of the spindle sleeves 1.() is arrangedsubstantially to receive the usual spindle provided with the customaryknobs, which latter' two features have been omitted from the drawings.

When the casing A is not made of cast iron but of sheet iron or otherilexible material, the spindle sleeves 1Q may be manufactured in onepiece, and sprung into position when the lock is being assembled,through the front or open end of the casing'.

The end faces of the cam 22 bear about equally against the upper andlower forward edges of the recess 14 in the enlargement of the latchshoe B, and in order that the said cam may have freedom of movement atits upper extremity, an opening 23 is made in the shoe of the latch toreceive said member, thus it n illV be observed that by turi'iing thelatch spindles, either of the knob spindles passed through the cam 22will be rocked either upward or downward, and whether turned in onedirection or the other will draw the head of the latch within thecasing, placing the spring 16 under tension. As soon as the knob isreleased, the spring acts to normally restore the latch to its outer ornormal position.

At a point below the shoe of the latch B, a keyhole 24 is produced in aside of the casing, in fact the keyhole may extend entirely through bothsides of the casing and through corresponding' sides of the door. Thiskeyhole is adapted to receive a key D of suitable type. The shoe 25 ofthe bolt C is beneath the shoe of the latch, as is the bolt Cimmediately below the latch B, but the shoe 25 of the bolt C extends buta short distance to the rear, and is provided with an extension orextensions 26 from its under face, that engage with the bottom wall ofthe casing A/ to guide the bolt shoe at that point, and the said boltshoe is provided at the rear portion of its upper face with a guide bar27, that has sliding engagement with the under face of the shoe of thelatch B, as is clearly shown in Figs. 1 and 2. The shoe 25 of the bolt Cis providedwith a longitudinal slot 23, and in this slot a release lever29 is located, being fulcrumed at its forward end, and in the upper faceof each member of the said shoe formed by the aforesaid slot 23 a recess30 is produced somewhat V-shaped or Haring at the top, and the saidrecesses which are in transverse alinement, are over the lower members26 of the said shoe, and the recesses 30 are adapted to receive the bitof the key D when the said key is turned, and according to the directionin which the key is turned the bolt C is moved outward or inward.

It is desirable to lock temporarily the bolt C in both its outer and itsinner position, therefore slots are produced in the lower edges of themembers of the shoe 25, the slots being in transversely alining pairs,namely, a forward pair 31, and a rear pair 32, and

either pair of slots, according to the position of the bolt C, receivesthe upper bow section of a substantially U-shaped spring 33 that issecured at its free ends to the bottom portion of the casing A',adjacent the front or beneath the head of the bolt C when in its innerposition, and the release lever 29 normally rests upon the said springlocking device 32 as is illustratedin Figs. 1 and 2. When the bolt is inits inner position the locking device therefor engages the forwardrecesses or notches 31, and when the bolt is in its outer position, therear recesses or notches 32 are engaged by the spring lock. Whenever thekey D is turned to enter the recesses 30 in the shoe of the bolt C ofthe device, to throw the same, the bit of the key also presses down thereleasing lever 29, causing it to press down on the spring lock 32 anddisengage it from the shoe of the bolt, leaving the bolt free to be shotinward or outward, as desired, the spring lock automatically returningto its engagement with said shoe 25 when the shoe is released from thekey.

The lever 29 is kept from falling out of place when the lock isinverted, by a pin or projection 36, passed through the shoe of the boltC, as is shown in Figs. 1 and 2.

A recess 34 is usually provided in the bottom wall of the casing A, topermit ample dmvnward movement of the spring lock 33, and usuallysegmental openings 35, shown in dotted lines in Fig. 1, are provided topermit the ready entrance of sections of the cam 22, but other means maybe provided for receiving the said cam.

Having thus described my invention, I claim as new and desire to secureby Letters Patent,-

1. In a lock, a casing, a spindle-operated latch mounted to slide in thecasing, a sliding bolt within the casing, independent of the latch, akey, means for operating the bolt by said key, a locking device for thebolt, and a releasing device for said locking device, 0perated by thesaid key.

2. In a lock, a cylindrical casing, a springcontrolled spindle-operatedlatch mounted for movement in the casing, a bolt having independentsliding movement in the casing adjacent the said latch, having a recesstherein, and a longitudinal slot and a lever pivoted in the said slot, akey arranged to enter the said slot and engaging with the said lever,and a spring locking device carried by the casing and adapted forengagement with the said bolt, which spring locking device is carriedinto or out of engagement with the said bolt by the action of the saidlever controlled by the movement of the said key.

3. In a lock, the combination with a casing, a bolt mounted to slide inthe said casing, the said bolt being provided with a shoe, and anenlargement at the end of the said shoe also mounted for slidingmovement in the casing, a spring bearing against said enlargement and anend of the casing, the said enlargement being provided with a recess inits inner forward face, a spindle sleeve passed through the said recessin the said enlargement, being journaled in the said casing, and a camcarried by the said spindle sleeve for engagement with the oppositeedges of the recess in said enlargement.

4. In a lock, the combination with a casing, of a bolt mounted to slidein the casing, a shoe for the said bolt provided with a longitudinalslot therein and recesses in its upper face, guides for the upper andlower portions of t e said shoe, a release lever pivoted in the s ottedportion of the shoe, a spring locking device secured t0 the said casing,being normally in engagement with the said shoe and in engagement withthe said release lever, and a key adapted to actuate the bolt byentering the recesses therein and to operate the said spring lock byoperation to and from the release lever.

In testimony whereof l have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS S. S. GEORGE.

Vitnesses:

HENRY T. WILSON, FRANK N. HIRsT.

